Fluid-trap



(No Model.) 2 Sheets-Sheet 1.

P. R. GRAY. Jr.

FLUID TRAP.

No. 417,171. I Patented Dec. 10, 1889.

aw! f- N. PKTERS, PhokrLilhognphar. WashlnglmDEG (No Model.) 2 Sheets-Sheet 2; P. R, GRAY, Jr. FLUID TRAP.

N0.417;171. Patented Dec. 10, 1889..

UNITED STATES PATENT ()FFICE.

IIIILANDER R. GRAY, JR, OF ELIZABETH, NEIV JERSEY.

FLUID- TRAP.

SPECIFICATION forming part of Letters Patent No. 417,171, dated December 10, 1889.

Application filed August 1, 1889. Serial No. 319,397. (No model.)

To all whom it may concern.-

Be it known that I, PHILANDER R. GRAY, J r,, of Elizabeth, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Automatically-Acting Fluid-'lraps, of which the following is a specification.

My invention relates to traps for use in steam heating systems or refrigerative or other systems where the circulation or periodic discharge of aliquid is to be accomplished.

The invention consists in certain improved constructions and organizations, hereinafter described and claimed.

In the accompanying drawings, Figure l is a plan view of the interior mechanism, the casin g being shown in horizontal section; Fig. 2, a vertical longitudinal section; Fig. 3, a transverse section on the line 3 3 of Fig. 2.

The shell orbody A of the trap may be circular in crosssection and is formed at each end with flanges A, to which the heads or end pieces A are bolted. On one sidethatforming the bottom of the trapthe flanges A are provided with feet Ct, which serve to lift the shell above the ground or floor.

B is the inlet-pipe, and C the outlet. The latter projects into the shell and is formed with or communicates with a flattened hollow chamber D, having a vertical screw-threaded hole through it, into which the screw threaded valve-seat plug E screws. The valve-scat plug is form ed with a central vertical passageway e, in which the valve F is seated, as presently described, and with horizontal passages c, leading from the central passage into the chamber I). The bottom of the valve-seat plug is formed with an angular recess 6 into which enters the correspondingly-shaped head or end of a vertical screw-adjusting rod E, passingthrough the bottom of the shell. By means of this rod the valve-seat plug maybe adjusted vertically in the chamber D. IVithin the shell, and preferably upon the outlet-pipe C or chamber D, are two lugs or pivot-supports G H, on opposite sides of the valve F. In the latter a lever II is pivoted, and the short end of this lever is pivotally connected with the Valve F, while its longer end carries a weight I1 In the former a lever G is pivoted, and the short end of this lever is pivotally connected with the valve F, while its longer end is connected by a vertical link G with the short end of a long horizontal lever I, arranged above the levers G H' and pivoted in brackets I I, mounted on the outlet end or head of the trap. The longer end of the lever I has swung from it an open bucket or a float K.

L is a fluid-gage of usual construction.

As will be perceived, this trap is operated by the difference in effective gravity between the weight II and the bucket K, which in operating is filled by the liquid, the relative power of the two being varied by the fluidlevel. The weight H normally tends to open the valve F and permit the discharge of fluid from the trap, and this tendency is counteracted by the superior weight of the bucket K when the fluid-level is low; but as the level of fluid rises, the effective weight of the bucket decreases and permits the valve F to open. By adjusting the valve-seat plug vertically, as before described, the elevation of the bucket, and consequently the level of the fluid to be maintained, may be varied; or by this adjustment the relations of the weighted lever and bucket-levers may be so adjusted as to insure the operation of the trap.

I claim as my invention 1. The combination, substantially as set forth, of the shell or casing having inlet and outlet pipes or passages, the outlet-valve, the weighted lever normally tending to open the valve, the float or bucket, and bucket-carrying levers connected to the valve independently of the weighted levers.

2. The combination, substantially as set. forth, of the shell or casing having inlet and outlet pipes or passages, the outlet-valve, the weighted lever normally tending to open the valve, and the float or bucket connected to the valve for closing it in the manner substantially as set forth.

3. The combination, substantially as set forth, of the shell, the removable head or end piece, the outlet-valve, the weighted lever for opening the valve, the float-levers connecting the float to the valve, and brackets secured to the end piece to which the float-levers are pivoted.

4. The combination, substantially as set forth, of the outlet-chamber, as D, having the screw-threaded valve-seat opening therein,

the screwthreatled valve-seatworking'in said i weighted lever, the float or bucket, and its opening, and the valve-seat-atljusti11g rod re l levers. (O movably connected therewith. J In testimony whereof I have hereunto sub 5. The combination, substantially as set scribed my name. fort-11,0f the shell, the outlet-chamber supl PI-IILAN'DER R. GRAY, JR. ported therein, the verticallyadjustable I Witnesses: valve-seat in said chamber, its adjusting-rod l JAMES B. KERR, extending through the shell, the valve, the 1 C. ADDISON SWIFT. 

